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Title: Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions

Abstract

Unpolarized and beam-polarized four-fold cross sections $$\frac{d^4 \sigma}{dQ^2 dx_B dt d\phi}$$ for the $$ep\to e^\prime p^\prime \gamma$$ reaction were measured using the CLAS detector and the 5.75-GeV polarized electron beam of the Jefferson Lab accelerator, for 110 ($$Q^2,x_B,t$$) bins over the widest phase space ever explored in the valence-quark region. Several models of Generalized Parton Distributions (GPDs) describe the data well at most of our kinematics. This increases our confidence that we understand the GPD $$H$$, expected to be the dominant contributor to these observables. Thus, through a leading-twist extraction of Compton Form Factors, these results reveal a tomographic image of the nucleon.

Authors:
 [1]
  1. Institut de Physique Nucleaire, CNRS/IN2P3 and Univ. Paris Sud, Orsay (France). et al.
Publication Date:
Research Org.:
Thomas Jefferson National Accelerator Facility (TJNAF), Newport News, VA (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Nuclear Physics (NP)
Contributing Org.:
CLAS Collaboration
OSTI Identifier:
1226143
Alternate Identifier(s):
OSTI ID: 1226380
Report Number(s):
JLAB-PH-15-2037; DOE/OR/23177-3373; arXiv:1504.02009
Journal ID: ISSN 0031-9007; PRLTAO
Grant/Contract Number:  
AC05-06OR23177
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 115; Journal Issue: 21; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society (APS)
Country of Publication:
United States
Language:
English
Subject:
43 PARTICLE ACCELERATORS; 72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS

Citation Formats

Jo, Hyon -Suk. Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions. United States: N. p., 2015. Web. doi:10.1103/PhysRevLett.115.212003.
Jo, Hyon -Suk. Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions. United States. https://doi.org/10.1103/PhysRevLett.115.212003
Jo, Hyon -Suk. 2015. "Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions". United States. https://doi.org/10.1103/PhysRevLett.115.212003. https://www.osti.gov/servlets/purl/1226143.
@article{osti_1226143,
title = {Cross sections for the exclusive photon electroproduction on the proton and Generalized Parton Distributions},
author = {Jo, Hyon -Suk},
abstractNote = {Unpolarized and beam-polarized four-fold cross sections $\frac{d^4 \sigma}{dQ^2 dx_B dt d\phi}$ for the $ep\to e^\prime p^\prime \gamma$ reaction were measured using the CLAS detector and the 5.75-GeV polarized electron beam of the Jefferson Lab accelerator, for 110 ($Q^2,x_B,t$) bins over the widest phase space ever explored in the valence-quark region. Several models of Generalized Parton Distributions (GPDs) describe the data well at most of our kinematics. This increases our confidence that we understand the GPD $H$, expected to be the dominant contributor to these observables. Thus, through a leading-twist extraction of Compton Form Factors, these results reveal a tomographic image of the nucleon.},
doi = {10.1103/PhysRevLett.115.212003},
url = {https://www.osti.gov/biblio/1226143}, journal = {Physical Review Letters},
issn = {0031-9007},
number = 21,
volume = 115,
place = {United States},
year = {Tue Nov 17 00:00:00 EST 2015},
month = {Tue Nov 17 00:00:00 EST 2015}
}

Journal Article:

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Cited by: 61 works
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Works referencing / citing this record:

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